<template>
  <div class="app-container">
    <el-form ref="form" :model="form" label-width="70px">
      <el-row :gutter="24">
        <el-col :span="4">
          <el-form-item label="轮播图" prop="name">
            <el-input v-model="form.name" placeholder="请输入轮播图名称" />
          </el-form-item>
        </el-col>
        <el-col :span="6">
          <el-button type="primary" @click="loadData">搜索</el-button>
          <el-button @click="searchResetForm('form')">重 置</el-button>

        </el-col>
      </el-row>
    </el-form>

    <div style="margin-bottom: 20px;">
      <el-button type="primary" size="small" @click="add('formLabelAlign')">添加</el-button>
    </div>
    <el-table
      :loading="loading"
      :data="tableData"
      border
      style="width: 100%"
    >
      <el-table-column
        label="序号"
        type="index"
        align="center"
        width="50"
      />

      <el-table-column prop="image" label="显示图片" align="center">
        <template slot-scope="scope">
          <el-image
            :src="scope.row.image"
            alt="图片"
            style="width: 50px; height: 50px;"
            :preview-src-list="imageData"
            :initial-index="scope.row.$index"
            fit="cover"
            :min-scale="1"
            :max-scale="1"
          />
        </template>
      </el-table-column>
      <el-table-column
        label="创建时间"
        align="center"
        prop="createTime"
      />
      <el-table-column
        fixed="right"
        label="操作"
        width="200"
        align="center"
      >
        <template slot-scope="scope">
          <el-button
            type="text"

            @click="edit(scope.$index)"
          >
            编辑
          </el-button>

          <el-button
            class="del"
            type="text"
            @click="del(scope.$index)"
          >
            删除
          </el-button>

        </template>
      </el-table-column>
    </el-table>

    <Pagination :total="total" :current-page="pageNum" :page-size="pageSize" @handleChange="handleChange" />

    <el-dialog :title="title" :close-on-click-modal="false" :visible.sync="dialogVisible" width="45%">
      <el-form ref="formLabelAlign" :model="formLabelAlign" :rules="rules" label-width="140px">

        <el-row>
          <el-col :span="10">
            <el-form-item label="封面图片" prop="image">
              <el-upload
                ref="upload"
                :headers="headers"
                class="avatar-uploader"
                :action="action"
                :auto-upload="true"
                :show-file-list="false"
                :on-success="handleAvatarSuccess"
                :on-change="beforeAvatarUpload"
              >
                <img v-if="imageUrl" :src="imageUrl" class="avatar">
                <i v-else class="el-icon-plus avatar-uploader-icon" />
              </el-upload>
            </el-form-item>
          </el-col>
        </el-row>

      </el-form>

      <div slot="footer" class="dialog-footer">
        <el-button type="primary" size="mini" @click="save('formLabelAlign')">确 定</el-button>
        <el-button size="mini" @click="resetForm('formLabelAlign')">重 置</el-button>
        <el-button size="mini" type="danger" @click="cancel('formLabelAlign')">关 闭</el-button>
      </div>
    </el-dialog>

  </div>
</template>

<script>

import { showData, resetForm, validate, success, fail } from '@/api/common'
import Pagination from '@/components/Pagination'
import Column from '@/components/Column'
import { get, lists, post, del } from '@/api/requestCommon'
import { getToken } from '@/utils/auth'
export default {
  name: 'PagePermission',
  components: {
    Pagination,
    Column
  },
  data() {
    return {
      imageData: [],
      headers: { Authorization: getToken() },
      action: process.env.VUE_APP_BASE_API + 'file/uploadFile',
      imageUrl: '',
      pageNum: 1, pageSize: 10, total: 0,
      form: { name: '' },
      tableData: [],
      selectRows: [],
      dialogVisible: false,
      title: '添加轮播图',
      editId: '',
      columnLists: [
        { prop: 'name', label: '轮播图名称' },
        { prop: 'createTime', label: '创建时间' }
      ],
      type: 'shop',
      rules: {

        image: [
          { required: true, message: '请选择封面图片', trigger: 'change', validator: (rule, value, callback) => {
            console.log('value', value)
            if (!value) {
              callback(new Error('请选择封面图片'))
            } else {
              callback()
            }
          } }

        ]
      },

      formLabelAlign: {
        id: '',
        name: '',
        image: ''
      },
      loading: true

    }
  },
  created() {

  },
  mounted() {
    this.loadData()
  },
  methods: {
    handleAvatarSuccess(res, file) {
      if (res.code === 200) {
        this.imageUrl = res.data
        this.formLabelAlign.image = res.data
      }
    },
    beforeAvatarUpload(file) {

    },
    del(index) {
      this.$confirm('此操作将永久删除该轮播, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        del('carousel', this.tableData[index].id).then(response => {
          if (response.code === 200) {
            success(response.msg)
            this.loadData()
          } else {
            fail(response.msg)
          }
        })
      }).catch(() => {

      })
    },
    edit(index) {
      this.title = '编辑轮播图'
      this.dialogVisible = true
      const row = this.tableData[index]
      get('carousel/findById/' + row.id).then(response => {
        if (response.code === 200) {
          Object.assign(this.formLabelAlign, response.data)
          this.imageUrl = response.data.image
        }
      })
    },
    cancel(formName) {
      resetForm(this, formName)
      this.dialogVisible = false
    },

    resetForm(formName) {
      resetForm(this, formName)
    },
    searchResetForm(formName) {
      resetForm(this, formName)
      this.loadData()
    },
    save(formName) {
      if (validate(this, formName)) {
        post('carousel/save', this.formLabelAlign).then(response => {
          if (response.code === 200) {
            this.dialogVisible = false
            this.loadData()
          } else {
            fail(response.msg)
          }
        })
      }
    },
    add(formName) {
      this.title = '添加轮播图'
      this.dialogVisible = true
      this.formLabelAlign.id = ''
      this.$nextTick(() => {
        resetForm(this, formName)
      })
      this.imageUrl = ''
    },

    selectionChange(rows) {
      this.selectRows = rows
    },

    handleChange(pageNum, pageSize) {
      this.pageNum = pageNum
      this.pageSize = pageSize
      this.loadData()
    },

    loadData() {
      this.form.pageNum = this.pageNum
      this.form.pageSize = this.pageSize
      lists('carousel', this.form).then(response => {
        if (response.code === 200) {
          response.data.records.forEach(item => {
            this.imageData.push(item.image)
          })
          showData(response, this)
        }
      })
    }
  }
}
</script>

<style lang="scss" scoped>

.avatar-uploader  {
  border: 1px dashed #14161c;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  height: 130px;
}
.avatar-uploader .el-upload:hover {
  border-color: #409EFF;
}
.avatar-uploader-icon {
  font-size: 40px;
  color: #8c939d;
  width: 200px;
  height: 140px;
  position: absolute;
  top: 40px;
   display: block;
}
.avatar {
  width: 178px;
  height: 130px;
  display: block;
}

.avatar-uploader img{
  cursor: pointer;
  width: 200px;
  height: 130px;
}
.del{
  color: red;
}
</style>
